Siftless lock-box.



J. WLMQKINNON.

SIFTLESS LOCK BOX.

APPLIGATION FILED 0GT.8, 1910.

Patented Oct. 10, 1911 z SHEETSSHEET 1.

H mm. 9;.

J. W. MOKINNON.

SIFTLESS LOOK BOX.

APPLICATION FILED 00T..8, 1910.

. Patented Oct. 10, 1911.

2 BHEETSS1IEET 2.

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JAMES MoKINNON, or RUTHERFORD, NEW JERSEY.

sirrnnss LOCK-BOX.

rooaaea.

To all whom it may concern: I

Be it known that I, JAMES W. MoKINNoN, a citizen of the United States, and a resident of Rutherford, iuthe county of Bergen and State of New Jersey, have inventedterials and other materials, without loss of" the materials by sifting through the joints or corners of the boxes. j

The invention especially relates to boxes having ends closed without paste and with out slits for forming a part of the locking devices; this invention providing a box wherein the ends are automatically securely closed and locked merely by the form and relation to each other of the various flaps, and by utilizing theelasticity of the folded material of the box to produce roper com pression of the various coacting aps on each other to firmly lock the proper flaps and close" all joints against leakage. The slits of boxes thus far in use are highly objection-' ablebecause they provide cracks for the leakage of the powder, while my invention,

having no slits and forming the end locks entirely by the clamping and binding action of the several flaps, provided no joint for leakage. Further, my invention is especially adapted to prevent leakage at the corners, which leakage is one of the eatest objections to the boxes heretofore m use. It is a further advantage of this invention, that the box does not require a wrapper; A pur chaser of a box of powder, for example, can carry the box with entire security against leakage and against accidental opening, without having it first wrapped up. This involves a material saving in the use of the boxes; and of course when desired, any descriptivematter can be printed directly on the blanks which form the boxes.

Uther advantages of the invention will be evident from the following description,

reference being had to the drawings which accompany the specification.

Uf said drawings, Figure 1 is a plan of the blank or carton for-making the box; Fig. 2 is a perspective View of a box partly Specification of Letters Patent.

Patented Oct. 10,1911.

Application filed October 8,1910. Serial No. 585,966.

' closed; 3 is a longitudinal section of a box folded to about the same position as indicated inFig. 2; Fig. 4 is a longitudinal sect1on illustrating how the other end is", next folded 1n, and Fig. 5 isa longitudinal* section of the. box completely closed. The sections of Figs. 3, l and 5 are about on the line .r'-w of Fig. 2. Fig. 6 is a broken perspective of one end of the box partly closed.

A sheet of any suitable material, such as cardboard suitable for box making, is cut and scored to form a blank which, as a whole, is indicated by A in Fig. 1. "If the box is to have a rectangular or square section, said blank will comprise the body flaps a, b, c and J, the joint lap e, and the triangular flaps i, z, j, j, and the tucking-in flaps 24:, 25, 24C, 25, 25, 24, 25 and 24: properly scored as'at 1, 2, 8, 4, 5, 6, 7, 8, 9, 9 to permit of the proper folding of the several flaps and parts of the box, and of course said scores and flaps will be arranged, as well understood in the art, according to the size and shape, and the number of sidesand :4

ends of the box.

Especially important are the flaps 30 at the outer ends of the end flaps 18 respectively. For when the box is filled and closed, these flaps bending on these scores 32, respectively, as indicated in Figs. 3, 4 and 5, under the weight and pressure of the contents, re spectively overlap the edges of the flaps 20, and aid in securely locking the ends of the box and in preventing sifting of the powder.

The scores indicated by the dotted lines 9,

in Fig. 1, are arranged to permit the triangular flaps 24c, 25, to fold inwardly in such a manner as to serve as locks to hold the flaps 18 securely inclosed position, and also so as to aid in preventing leakage at the joints and corners of the ends of the box. In the preferred construction, the

edges 40 of the corresponding flaps 24:, are

formed on an outward inclination from their junctions with the edges 41 of flaps 25, as

indicated, since the angle of these edges facilitates closing in said flaps 24;, and also tends to prevent leakage at the corners; but i said edges mightbe formed parallel with thescores 5 and 6, without departing from my invention. fAnimportant feature of the invention in all modifications, is that the blank 'A isleft solid and uncut between the tuck- -ing-in flaps and the end flaps, since cuts at this part, such as are employed in blanks of the prior art, permit leakage of the contents.

In fact my blank is without through cuts at any point.

The blank is folded and the flaps are closed in the following manner: The flap e is pasted or secured in any suitable manner to the flaps d, 20 and 21. The flap 18 is then turned into the interior of the box, the flap thereof standing at an inclination, about as shown for the flap 30 in Fig. 3. The triangular flaps z and j are then pushed inwardly, bending the flaps g and 20 somewhat inwardly, about as shown for the flaps f and 20 in Fig; 4-, and the outer end of flap 20 is entered into the triangular space between the inside of flap 18 and the inside of flaps 25, said flaps 25 having been turned partly ,in so that an angular space is formed between them and said flap 18 to receive'flap 20. Flap 20 is now pushed home to place, the inclined edges 40 at that end of the box facilitating so doing, and also facilitating the entry of flaps 2 1 into said space between flap 18 and flaps 25. Now the parts at this end of the box are pushed fully home to the closed position shown at the bottom of the boxes in Figs. 3; 4L and 5. Of course instead of first closing the lower end of the box as indicated in the drawings, the, other end might be first closed; the operation being similar'to that hereinbefore described. The box is now filled, and the weight of the contents will flatten down the flange-like flap 30, which will thereby further tend to securely lock the end, and also tend to prevent leakage. The flaps -25 .will also be pressed down by the contents and most securely lock theend and prevent leakage. The box having been filled, the other end is closed in the manner hereinbefore explained. Now the box will be tightly closed against leakage and against the possibility of accidentally opening, and no wrapping will be required for safe transportation.

From the foregoing description it will be evident that when the ends of thebox are closed, the various flaps become so positioned and, related to each other that the powder or other contents mustwork through a very complicated joint before it can leak out, and that the compressions of the various flaps upon each other, produced by the elasticity of the several su )erimposed folded flaps, effectually and tightly closes all joints.

Now havingdescribed my improvements, I claim as my invention.

A closure for a rectangular tubular box, comprising closure flaps carried by two opposite walls, infolding triangular webs connecting said closure flaps, one of said closure flaps carrying an extension flap of the same size as the closure flap and adapted to be folded inwardly thereunder, said extension flap also carryin a pocket flap adapted to be folded outwardly thereon; said extension flap and its pocket flap cooperating with thetriangular web adjacent that closure flap which carries the extension flap, to form a pocket to receive the other closure ap. I

Signed at New York city in the county of New York and State of l\ew York this 7th day of October, A. D. 1910.

JAMES W. MoKINNON.

Witnesses: A

G. WV. HOPKINS,

WALTER Y. HARRIS. 

